Collective Thomson scattering measurements of electron feature using stimulated Brillouin scattering in laser-produced plasmas
| Autor: | Shogo Isayama, S. Sakata, Hsu-Hsin Chu, S. Tomiya, M. Koenig, H. Shimogawara, Shinsuke Fujioka, T. Y. Huang, Y. L. Liu, C. H. Chen, C. W. Peng, Kentaro Tomita, N. Khasanah, Kiichiro Uchino, Toseo Moritaka, Yoichi Sakawa, K. Sakai, Nima Bolouki, Yuta Sato, Ryo Yamazaki, Yasuhiro Kuramitsu, Sadaoki Kojima, Y. Hara, Y. Shoji, Taichi Morita, Shuichi Matsukiyo |
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| Přispěvatelé: | National Central University [Taiwan] (NCU), National Institute for Fusion Science (NIFS), Kyushu University [Fukuoka], Max-Planck-Institut für Extraterrestrische Physik (MPE), Institute of Laser Engineering (ILE), Osaka University [Osaka], Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Graduate School of Engineering, Osaka University, Kyushu University |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Electron density Radiation Drift velocity Materials science Thomson scattering business.industry Physics::Optics Electron Plasma Laser 01 natural sciences 010305 fluids & plasmas law.invention Optics Physics::Plasma Physics Brillouin scattering law [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] 0103 physical sciences Electron temperature 010306 general physics business ComputingMilieux_MISCELLANEOUS |
| Zdroj: | High Energy Density Physics High Energy Density Physics, Elsevier, 2019, 32, pp.82-88. ⟨10.1016/j.hedp.2019.06.002⟩ High Energy Density Physics, 2019, 32, pp.82-88. ⟨10.1016/j.hedp.2019.06.002⟩ |
| ISSN: | 1574-1818 |
| Popis: | Collective Thomson scattering (CTS) has been applied to laser-produced plasmas with Gekko XII HIPER laser facility. A scheme of stimulated Brillouin scattering (SBS) has been used in CTS measurements for the first time. Utilizing SBS shortens the probe pulse, which increases the scattered power, and thus collected scattered signal of CTS. Therefore, a lower energy probe laser can be used for given background emission levels to avoid probe heating, which is crucial for plasmas with low electron temperature. Both electron and ion features of CTS have been successfully detected by using the SBS technique. The spatial profile of electron density, temperature, and drift velocity have been estimated in an ablation plasma. In addition to the local measurements with CTS, a global structure of plasmas has been obtained with optical imaging of the self-emission of plasmas and the interferometry. In the aspects of drift velocity and plasma density, the local and global information are in good agreement. |
| Databáze: | OpenAIRE |
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